New Jersey Statutes Title 54. Taxation 54 § 4-68.1

c. (1) When the amount paid in a dedicated prepayment exceeds the total property tax and assessment levied for the dedicated installment, the municipality shall refund the taxpayer the amount of the excess within 60 days of issuance of the tax bill or, if the governing body does not meet within those 60 days, the next regularly scheduled governing body meeting thereafter. When, upon issuing the tax bill for a dedicated installment, the tax collector determines that the dedicated prepayment is insufficient to equal the total property tax and assessment levied, the difference due and payable shall be paid or collected as other taxes are collected.

(2) When a mortgagee pays any property tax and assessment installment for the mortgaged premises, and the owner of the mortgaged premises also makes a dedicated prepayment toward the installment, the municipality shall, within 60 days of the issuance of the tax bill or, if the governing body does not meet within those 60 days, the next regularly scheduled governing body meeting thereafter, refund the second-in-time payor the amount in excess of the tax and assessment levied.